//
//  SceneDelegate.swift
//  SwiftLearning
//
//  Created by 黄龙 on 2023/11/21.
//

import UIKit

class SceneDelegate: UIResponder, UIWindowSceneDelegate {

    var window: UIWindow?


    func scene(_ scene: UIScene, willConnectTo session: UISceneSession, options connectionOptions: UIScene.ConnectionOptions) {
        // Use this method to optionally configure and attach the UIWindow `window` to the provided UIWindowScene `scene`.
        // If using a storyboard, the `window` property will automatically be initialized and attached to the scene.
        // This delegate does not imply the connecting scene or session are new (see `application:configurationForConnectingSceneSession` instead).
//        guard let _ = (scene as? UIWindowScene) else { return }
        
        guard let windowScene = (scene as? UIWindowScene) else { return }
        let window = UIWindow(windowScene: windowScene)
        self.window = window
        
//        let homeVC = ViewController()
//        window.rootViewController = homeVC
        window.makeKeyAndVisible()
        
        showAdViewBeforeMainVC()
    }
    
    func showAdViewBeforeMainVC(){
        let homeVC = ViewController()
        homeVC.preInitView() //调用主要为触发ViewController的viewDidLoad,从而可以先进行initView初始化UI(不会触发viewDidAppear)
        //let adView = AdView(frame: CGRect(x: 0, y: 0, width: screen_W, height: screen_H))
        //注意：此种方式创建，removeFromSuperview后，AdView不会deinit。应改为下面var optional变量方式：
        var adView:AdView? = AdView(frame: CGRect(x: 0, y: 0, width: screen_W, height: screen_H))
        adView?.tapBlock = {
            if let tmpView = adView{
                for perView in tmpView.subviews{
                    perView.removeFromSuperview()
                }
            }
            adView?.removeFromSuperview()
            adView = nil
//显示RootVC，可以
            let scene = UIApplication.shared.connectedScenes.first
            guard let windowScene = scene as? UIWindowScene else  {return}
            if let window = windowScene.windows.first{ //=SceneDelegate里的window
//取window方式一：
                window.rootViewController = homeVC
            }else if let sceneDelegate = UIApplication.shared.connectedScenes.first?.delegate as? SceneDelegate {
//方式二：也可以直接引用SceneDelegate的对象window
                sceneDelegate.window?.rootViewController = homeVC
            }
        }
    }

    func sceneDidDisconnect(_ scene: UIScene) {
        // Called as the scene is being released by the system.
        // This occurs shortly after the scene enters the background, or when its session is discarded.
        // Release any resources associated with this scene that can be re-created the next time the scene connects.
        // The scene may re-connect later, as its session was not necessarily discarded (see `application:didDiscardSceneSessions` instead).
    }

    func sceneDidBecomeActive(_ scene: UIScene) {
        // Called when the scene has moved from an inactive state to an active state.
        // Use this method to restart any tasks that were paused (or not yet started) when the scene was inactive.
    }

    func sceneWillResignActive(_ scene: UIScene) {
        // Called when the scene will move from an active state to an inactive state.
        // This may occur due to temporary interruptions (ex. an incoming phone call).
    }

    func sceneWillEnterForeground(_ scene: UIScene) {
        // Called as the scene transitions from the background to the foreground.
        // Use this method to undo the changes made on entering the background.
    }

    func sceneDidEnterBackground(_ scene: UIScene) {
        // Called as the scene transitions from the foreground to the background.
        // Use this method to save data, release shared resources, and store enough scene-specific state information
        // to restore the scene back to its current state.
    }


}

